Have done today those little pieces to complete 7 sections. I have to select and replace previous wood because of brittleness being cut endgrain. I learned today that even a very hardwood cannot be trusted to retain its hardness when it is cut endgrain. There are some cracks along the line. Here is the picture how it looks today.

and here is another…

The lesson learned today…. The piece much be clamped firmly during cutting and filing.